[Android Central Question]

have uninstalled Microsoft launcher from my phone but unable to delete, bypass or change the photo left behind on my screen saver.

[Rukbat]

You can't really just delete it - you can change it to, say, solid black, so it looks as if it was deleted.

Long-press a blank area on your home screen, then tap Wallpaper, then choose one.

Or use Wallpaper Wizardrii to turn any picture into wallpaper (even if it fits wrong, it still works).